<?php

/**
 * @file
 * Contains the numeric argument handler.
 */

/**
 * Basic argument handler for arguments that are numeric. Incorporates
 * break_phrase.
 *
 * @ingroup views_argument_handlers
 */
class views_handler_argument_numeric extends views_handler_argument {

    function option_definition() {
        $options = parent::option_definition();

        $options['break_phrase'] = array('default' => FALSE);
        $options['not'] = array('default' => FALSE);

        return $options;
    }

    function options_form(&$form, &$form_state) {
        parent::options_form($form, $form_state);

        // allow + for or, , for and
        $form['break_phrase'] = array(
            '#type' => 'checkbox',
            '#title' => t('Allow multiple terms per argument.'),
            '#description' => t('If selected, users can enter multiple arguments in the form of 1+2+3 or 1,2,3.'),
            '#default_value' => !empty($this->options['break_phrase']),
        );

        $form['not'] = array(
            '#type' => 'checkbox',
            '#title' => t('Exclude the argument'),
            '#description' => t('If selected, the numbers entered in the argument will be excluded rather than limiting the view.'),
            '#default_value' => !empty($this->options['not']),
        );
    }

    function title() {
        if (!$this->argument) {
            return !empty($this->definition['empty field name']) ? $this->definition['empty field name'] : t('Uncategorized');
        }

        if (!empty($this->options['break_phrase'])) {
            views_break_phrase($this->argument, $this);
        } else {
            $this->value = array($this->argument);
            $this->operator = 'or';
        }

        if (empty($this->value)) {
            return !empty($this->definition['empty field name']) ? $this->definition['empty field name'] : t('Uncategorized');
        }

        if ($this->value === array(-1)) {
            return !empty($this->definition['invalid input']) ? $this->definition['invalid input'] : t('Invalid input');
        }

        return implode($this->operator == 'or' ? ' + ' : ', ', $this->title_query());
    }

    /**
     * Override for specific title lookups.
     */
    function title_query() {
        return $this->value;
    }

    function query() {
        $this->ensure_my_table();

        if (!empty($this->options['break_phrase'])) {
            views_break_phrase($this->argument, $this);
        } else {
            $this->value = array($this->argument);
        }

        $null_check = empty($this->options['not']) ? '' : " OR $this->table_alias.$this->real_field IS NULL";

        if (count($this->value) > 1) {
            $operator = empty($this->options['not']) ? 'IN' : 'NOT IN';
            $placeholders = implode(', ', array_fill(0, sizeof($this->value), '%d'));
            $this->query->add_where(0, "$this->table_alias.$this->real_field $operator ($placeholders) $null_check", $this->value);
        } else {
            $operator = empty($this->options['not']) ? '=' : '!=';
            $this->query->add_where(0, "$this->table_alias.$this->real_field $operator %d $null_check", $this->argument);
        }
    }

}
